Rem Tag Along (2) erroneously refunds cooldown of subsequent hops when target hero dies

[hatsunearu]

Steps to reproduce:

1. Tag Along to first hero
2. Second Tag Along (free) to second hero
3. Second hero dies while Rem is in flight
4. Tag Along gets cancelled, but the cooldown is refunded

Expected behavior:

1. Tag Along to first hero
2. Second Tag Along (free) to second hero
3. Second hero dies while Rem is in flight
4. Tag Along gets cancelled, and cooldown runs as normal

 

[hatsunearu]

This happened in 78658563, though I don't have the exact timestamp where this occurred.
I'm hoping the bug is obvious from code inspection though.